10 More Discussions You Might Find Interesting
1. Red Hat
I am Not sure why following script is not capturing the counts only when using crontab !! when I run it fromt he command line it is fine ! what is missing here !
#!/usr/bin/ksh
host=`uname -n`
tdate=`date`
userid='dbid/password'
totalevents=`sqlplus -s $userid << -
set timing off
... (1 Reply)
Discussion started by: mrn6430
1 Replies
2. Shell Programming and Scripting
Hello all,
I'm trying to write a script to gather and send data and it works just fine at the bash command line, but when executing from CRON, it does not run properly.
My scripting skills are pretty limited and there's probably a better way, but as I said it works at the command line, but... (12 Replies)
Discussion started by: rusman
12 Replies
3. Shell Programming and Scripting
#!/bin/bash
#
# RAP configuration script
#
# Usage: ./rap.sh
#
# Requires: expect, tcl
#
# Script expects to find a file called rap.csv located in the same directory as the script. If the file is placed
# in a different directory, modify the custom entries section to specify the absolute... (8 Replies)
Discussion started by: mrkool
8 Replies
4. Shell Programming and Scripting
Hi
I am new to this Scripting process and would like to know How can i write a ksh script that will call other ksh scripts and write the output to a file and/or email.
For example
-------
Script ABC
-------
a.ksh
b.ksh
c.ksh
I need to call all three scripts execute them and... (2 Replies)
Discussion started by: pacifican
2 Replies
5. Shell Programming and Scripting
OS is Ubuntu 8.04.3. When I run the command:
/usr/bin/syslogMailer < /etc/syslog.pipes/criticalMessagesFrom a bash shell it works and i receive an email as per the script however when run from crontab it does not work. Can anyone explain why and how to fix it?
/usr/bin/syslogMailer... (4 Replies)
Discussion started by: jelloir
4 Replies
6. Shell Programming and Scripting
Hi
I am a novice Linux/Perl user and am struggling to overcome what I am sure is a simple problem.
I am using a perl program to create a shell script daily containing between 10 and 30 "at -f" commands for the same day. Then I change the file attributes to allow the file to be executed. When... (2 Replies)
Discussion started by: simoncjones
2 Replies
7. Shell Programming and Scripting
I am using Solaris 9. I wish to run my script every 1 minute inteval. Though i can run it using below entry in crontab.
* * * * /export/home/username/script/file_exist_&_run.sh
in short above script will check whether a specific file exist in a directory. If it found it will inovke another... (10 Replies)
Discussion started by: thepurple
10 Replies
8. Shell Programming and Scripting
Hi Folks,
Could you please suggest me how to run a shell script on a solaris env without using crontab. I am actually trying to write a shell script which will grep "WORD" in the logfile andd sends a email.Thanks in advance.
Thanks
Sandeep. (3 Replies)
Discussion started by: sandeep anand
3 Replies
9. Shell Programming and Scripting
Hello gurus.
I have a problem: my crontab -e is looks like this:
ORACLE_SID=bla-bla
* 21 * * * (sqlplus hotback/hotback @/oracle/backups/bla-bla/scripts/hotback/daily_hotback.sql)
0 19 * * * /oracle/backups/dev10g/scripts/exports/daily_exports.sh
0 1 * * *... (4 Replies)
Discussion started by: MarGur
4 Replies
10. UNIX for Advanced & Expert Users
I have written a "simple" shell-script (BASH) to monitor the logs of our Resin-applicationserver. Whenever Resin runs out of available heap-space, the script then tries to restart the Resin-server.
My problem is that my "autopilot"-script fails when it's run from crontab.
Here's what the... (5 Replies)
Discussion started by: indo1144
5 Replies
CRON(8) BSD System Manager's Manual CRON(8)
NAME
cron -- daemon to execute scheduled commands (Vixie Cron)
SYNOPSIS
cron [-s] [-o] [-x debugflag[,...]]
DESCRIPTION
The cron utility is launched by launchd(8) when it sees the existence of /etc/crontab or files in /usr/lib/cron/tabs. There should be no
need to start it manually. See /System/Library/LaunchDaemons/com.vix.cron.plist for details.
The cron utility searches /usr/lib/cron/tabs for crontab files which are named after accounts in /etc/passwd; crontabs found are loaded into
memory. The cron utility also searches for /etc/crontab which is in a different format (see crontab(5)).
The cron utility then wakes up every minute, examining all stored crontabs, checking each command to see if it should be run in the current
minute. When executing commands, any output is mailed to the owner of the crontab (or to the user named in the MAILTO environment variable
in the crontab, if such exists).
Additionally, cron checks each minute to see if its spool directory's modification time (or the modification time on /etc/crontab) has
changed, and if it has, cron will then examine the modification time on all crontabs and reload those which have changed. Thus cron need not
be restarted whenever a crontab file is modified. Note that the crontab(1) command updates the modification time of the spool directory
whenever it changes a crontab.
Available options:
-s Enable special handling of situations when the GMT offset of the local timezone changes, such as the switches between the standard
time and daylight saving time.
The jobs run during the GMT offset changes time as intuitively expected. If a job falls into a time interval that disappears (for
example, during the switch from standard time) to daylight saving time or is duplicated (for example, during the reverse switch),
then it is handled in one of two ways:
The first case is for the jobs that run every at hour of a time interval overlapping with the disappearing or duplicated interval.
In other words, if the job had run within one hour before the GMT offset change (and cron was not restarted nor the crontab(5)
changed after that) or would run after the change at the next hour. They work as always, skip the skipped time or run in the added
time as usual.
The second case is for the jobs that run less frequently. They are executed exactly once, they are not skipped nor executed twice
(unless cron is restarted or the user's crontab(5) is changed during such a time interval). If an interval disappears due to the GMT
offset change, such jobs are executed at the same absolute point of time as they would be in the old time zone. For example, if
exactly one hour disappears, this point would be during the next hour at the first minute that is specified for them in crontab(5).
-o Disable the special handling of situations when the GMT offset of the local timezone changes, to be compatible with the old (default)
behavior. If both options -o and -s are specified, the option specified last wins.
-x debugflag[,...]
Enable writing of debugging information to standard output. One or more of the following comma separated debugflag identifiers must
be specified:
bit currently not used
ext make the other debug flags more verbose
load be verbose when loading crontab files
misc be verbose about miscellaneous one-off events
pars be verbose about parsing individual crontab lines
proc be verbose about the state of the process, including all of its offspring
sch be verbose when iterating through the scheduling algorithms
test trace through the execution, but do not perform any actions
FILES
/usr/lib/cron/tabs Directory for personal crontab files
SEE ALSO
crontab(1), launchctl(1), crontab(5), launchd.plist(5), launchd(8)
AUTHORS
Paul Vixie <paul@vix.com>
BSD
June 17, 2007 BSD